Skip to content

gh-106246: Allow the use of unions as match patterns #118644

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
wants to merge 8 commits into
base: main
Choose a base branch
from
Draft

gh-106246: Allow the use of unions as match patterns #118644

Changes from 1 commit
Commits
Show all changes
8 commits
Select commit Hold shift + click to select a range
cb2b850
Allow the use of unions as match patterns
tmke8 May 2, 2024
114f250
add match-case support for unions
randolf-scholz May 6, 2024
2f9aa38
Updated error string
randolf-scholz Jul 21, 2025
4829f23
changed test_legacy_union to test_typing_union. Changed behavior due …
randolf-scholz Jul 21, 2025
c4062b1
Merge branch 'main' into fix-issue-118524-match-union
randolf-scholz Jul 21, 2025
65f2a64
Update Python/ceval.c
randolf-scholz Jul 21, 2025
3e12030
fixed test to match new error message
randolf-scholz Jul 21, 2025
0febb80
added to docs
randolf-scholz Jul 21, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
added to docs
  • Loading branch information
@randolf-scholz
randolf-scholz committed Jul 21, 2025
commit 0febb806bca93ad8fadc550c13857b70c83beedb
5 changes: 5 additions & 0 deletions Doc/reference/compound_stmts.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1098,6 +1098,11 @@ The same keyword should not be repeated in class patterns.
The following is the logical flow for matching a class pattern against a
subject value:

#. If ``name_or_attr`` is a union type, apply the subsequent steps in order to
each of its members, returning the first successful match or raising the first
encountered exception.
This mirrors the behavior of :func:`isinstance` with union types.

#. If ``name_or_attr`` is not an instance of the builtin :class:`type` , raise
:exc:`TypeError`.

Expand Down
Loading
pFad - Phonifier reborn

Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.

Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.


Alternative Proxies:

Alternative Proxy

pFad Proxy

pFad v3 Proxy

pFad v4 Proxy